{"id":1801,"date":"2022-05-10T03:21:25","date_gmt":"2022-05-10T03:21:25","guid":{"rendered":"https:\/\/topviecit.vn\/blog\/?p=1801"},"modified":"2022-05-10T03:22:34","modified_gmt":"2022-05-10T03:22:34","slug":"function-la-gi","status":"publish","type":"post","link":"https:\/\/topviecit.vn\/blog\/function-la-gi\/","title":{"rendered":"Function l\u00e0 g\u00ec? B\u00ed m\u1eadt v\u1ec1 Function m\u00e0 d\u00e2n l\u1eadp tr\u00ecnh c\u1ea7n bi\u1ebft"},"content":{"rendered":"\n<p>Function l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m m\u00e0 b\u1ea1n c\u1ea7n l\u01b0u \u00fd trong l\u0129nh v\u1ef1c c\u00f4ng ngh\u1ec7 th\u00f4ng tin. Tuy v\u1eady, c\u00f3 kh\u00e1 nhi\u1ec1u b\u1ea1n l\u1eadp tr\u00ecnh m\u1edbi ch\u01b0a th\u1ef1c s\u1ef1 hi\u1ec3u v\u1ec1 <strong>Function l\u00e0 g\u00ec<\/strong>. H\u00e3y c\u00f9ng <strong><a href=\"https:\/\/topviecit.vn\/\">topviecit.vn<\/a><\/strong> t\u00ecm hi\u1ec3u ngay v\u1ec1 kh\u00e1i ni\u1ec7m Function trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_63 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/topviecit.vn\/blog\/function-la-gi\/#Tim_hieu_ve_Function_la_gi\" title=\"T\u00ecm hi\u1ec3u v\u1ec1 Function l\u00e0 g\u00ec?\">T\u00ecm hi\u1ec3u v\u1ec1 Function l\u00e0 g\u00ec?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/topviecit.vn\/blog\/function-la-gi\/#Function_la_gi\" title=\"Function l\u00e0 g\u00ec?\">Function l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/topviecit.vn\/blog\/function-la-gi\/#Cac_loai_Function_trong_lap_trinh\" title=\"C\u00e1c lo\u1ea1i Function trong l\u1eadp tr\u00ecnh\">C\u00e1c lo\u1ea1i Function trong l\u1eadp tr\u00ecnh<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/topviecit.vn\/blog\/function-la-gi\/#Mot_so_van_de_ve_Function_nen_biet\" title=\"M\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 v\u1ec1 Function n\u00ean bi\u1ebft\">M\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 v\u1ec1 Function n\u00ean bi\u1ebft<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/topviecit.vn\/blog\/function-la-gi\/#Luu_y_khi_su_dung_Function\" title=\"L\u01b0u \u00fd khi s\u1eed d\u1ee5ng Function\">L\u01b0u \u00fd khi s\u1eed d\u1ee5ng Function<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/topviecit.vn\/blog\/function-la-gi\/#Muc_dich_cua_viec_su_dung_Function\" title=\"M\u1ee5c \u0111\u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng Function\">M\u1ee5c \u0111\u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng Function<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tim_hieu_ve_Function_la_gi\"><\/span><strong>T\u00ecm hi\u1ec3u v\u1ec1 Function l\u00e0 g\u00ec?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>T\u00ecm hi\u1ec3u v\u1ec1 kh\u00e1i ni\u1ec7m c\u1ee7a Function l\u00e0 g\u00ec c\u00f9ng v\u1edbi c\u00e1c lo\u1ea1i Function s\u1ebd gi\u00fap cho b\u1ea1n hi\u1ec3u v\u00e0 v\u1eadn d\u1ee5ng \u0111\u01b0\u1ee3c Function t\u1ed1t h\u01a1n. C\u1ee5 th\u1ec3 nh\u01b0 sau:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Function_la_gi\"><\/span><strong>Function l\u00e0 g\u00ec?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Function \u2013 h\u00e0m \u2013 trong IT, Function l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c \u0111o\u1ea1n m\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 th\u1ef1c hi\u1ec7n nhi\u1ec7m v\u1ee5 n\u00e0o \u0111\u00f3. H\u00e0m c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c g\u1ecdi, t\u00e1i s\u1eed d\u1ee5ng nhi\u1ec1u l\u1ea7n trong qu\u00e1 tr\u00ecnh l\u1eadp tr\u00ecnh. B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 chuy\u1ec3n th\u00f4ng tin c\u1ea7n thi\u1ebft v\u00e0o m\u1ed9t Function. \u0110\u1ed3ng th\u1eddi, c\u00f3 th\u1ec3 g\u1eedi tr\u1ea3 l\u1ea1i th\u00f4ng tin. B\u00ean c\u1ea1nh \u0111\u00f3, b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 t\u1ef1 t\u1ea1o ra c\u00e1c Function ri\u00eang \u0111\u1ec3 ph\u1ee5c v\u1ee5 cho m\u1ee5c \u0111\u00edch c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<p>>>>Xem th\u00eam: <a href=\"https:\/\/topviecit.vn\/blog\/functional-programming-la-gi\/\">Functional Programming L\u00e0 G\u00ec? T\u1eeb A \u0110\u1ebfn Z V\u1ec1 Functional Programming<\/a><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" src=\"https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-12.jpeg\" alt=\"T\u00ecm hi\u1ec3u v\u1ec1 Function l\u00e0 g\u00ec?\" class=\"wp-image-1831\" title=\"T\u00ecm hi\u1ec3u v\u1ec1 Function l\u00e0 g\u00ec?\" srcset=\"https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-12.jpeg 800w, https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-12-640x400.jpeg 640w, https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-12-768x480.jpeg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption><em>T\u00ecm hi\u1ec3u v\u1ec1 Function l\u00e0 g\u00ec?<\/em><\/figcaption><\/figure><\/div>\n\n\n\n<p>C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Function s\u1ebd \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch nh\u01b0 sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>C\u00e1c Function s\u1ebd \u0111\u01b0\u1ee3c \u0111\u1ecdc l\u1ea7n l\u01b0\u1ee3t theo th\u1ee9 t\u1ef1 s\u1eafp x\u1ebfp t\u1eeb tr\u00ean xu\u1ed1ng.<\/li><li>Khi b\u1ea1n th\u1ef1c hi\u1ec7n l\u1ec7nh g\u1ecdi m\u1ed9t h\u00e0m, ch\u01b0\u01a1ng tr\u00ecnh c\u1ee7a b\u1ea1n s\u1ebd t\u1ea1m d\u1eebng \u1edf \u0111o\u1ea1n \u0111ang ch\u1ea1y, ti\u1ebfn h\u00e0nh th\u1ef1c thi h\u00e0m \u0111\u00f3.<\/li><li>Khi Function \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n xong, ch\u01b0\u01a1ng tr\u00ecnh c\u1ee7a b\u1ea1n s\u1ebd th\u1ef1c hi\u1ec7n ti\u1ebfp t\u1ee5c ch\u1ea1y l\u1ea1i \u1edf n\u01a1i m\u00e0 n\u00f3 \u0111ang t\u1ea1m d\u1ef1ng.<\/li><\/ul>\n\n\n\n<p>B\u00ean c\u1ea1nh \u0111\u00f3, b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 hi\u1ec3u r\u1eb1ng, h\u00e0m \u2013 Function \u2013 ch\u00ednh l\u00e0 m\u1ed9t \u0111o\u1ea1n ch\u01b0\u01a1ng tr\u00ecnh \u0111\u1ed9c l\u1eadp \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n v\u1edbi m\u1ee5c \u0111\u00edch nh\u1ea5t \u0111\u1ecbnh, sau \u0111\u00f3 tr\u1ea3 v\u1ec1 gi\u00e1 tr\u1ecb mong mu\u1ed1n cho ch\u01b0\u01a1ng tr\u00ecnh th\u1ef1c hi\u1ec7n g\u1ecdi h\u00e0m. Hay, Function ch\u00ednh l\u00e0 m\u1ed9t s\u1ef1 chia nh\u1ecf c\u1ee7a h\u00e0m.<\/p>\n\n\n\n<p><strong><em>V\u00ed d\u1ee5 \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 Function nh\u01b0 sau:<\/em><\/strong><\/p>\n\n\n\n<p>Gi\u1ea3 s\u1eed c\u00f3 10 b\u1ea1n \u0111\u1ec1u th\u00edch u\u1ed1ng tr\u00e0 \u0111\u00e0o, theo th\u00f4ng th\u01b0\u1eddng, 10 b\u1ea1n n\u00e0y \u0111\u1ec1u s\u1ebd \u0111i c\u1ea7n \u0111i mua tr\u00e0, b\u1ed9t, s\u1eefa v\u00e0 c\u00e1c nguy\u00ean li\u1ec7u n\u00e0y \u0111\u1ec3 th\u1ef1c hi\u1ec7n pha ch\u1ebf tr\u00e0 \u0111\u00e0o. Tuy v\u1eady, \u0111\u00e2y l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh kh\u00e1 t\u1ed1n th\u1eddi gian. Do \u0111\u00f3, thay v\u00ec 10 b\u1ea1n n\u00e0y c\u00f9ng \u0111i mua tr\u00e0 \u0111\u00e0o th\u00ec h\u1ecd s\u1ebd g\u1ecdi \u201ctr\u00e0 \u0111\u00e0o\u201d t\u1eeb m\u1ed9t c\u1eeda h\u00e0ng n\u00e0o \u0111\u00f3.<\/p>\n\n\n\n<p>V\u1eady, c\u00f3 th\u1ec3 hi\u1ec3u r\u1eb1ng, Function \u1edf \u0111\u00e2y ch\u00ednh l\u00e0 vi\u1ec7c b\u1ea1n g\u1ecdi h\u00e0m \u201ctr\u00e0 \u0111\u00e0o\u201d, c\u1eeda h\u00e0ng s\u1ebd th\u1ef1c hi\u1ec7n c\u00f4ng vi\u1ec7c \u201cpha ch\u1ebf\u201d thay cho b\u1ea1n. K\u1ebft qu\u1ea3 m\u00e0 b\u1ea1n nh\u1eadn \u0111\u01b0\u1ee3c ch\u00ednh l\u00e0 \u201cty tr\u00e0 \u0111\u00e0o\u201d. Hay hi\u1ec3u \u0111\u01a1n gi\u1ea3n h\u01a1n, \u201cly tr\u00e0 \u0111\u00e0o\u201d ch\u00ednh l\u00e0 ph\u1ea7n k\u1ebft qu\u1ea3 do Function tr\u1ea3 l\u1ea1i cho b\u1ea1n t\u1eeb ch\u01b0\u01a1ng tr\u00ecnh pha ch\u1ebf.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cac_loai_Function_trong_lap_trinh\"><\/span><strong>C\u00e1c lo\u1ea1i Function trong l\u1eadp tr\u00ecnh<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>B\u1ea1n c\u00f3 th\u1ec3 v\u1eadn d\u1ee5ng nhi\u1ec1u c\u00e1ch \u0111\u1ec3 vi\u1ebft Function. C\u00fa ph\u00e1p c\u1ee5 th\u1ec3 s\u1ebd c\u00f2n t\u00f9y thu\u1ed9c v\u00e0o vi\u1ec7c b\u1ea1n s\u1eed d\u1ee5ng ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh n\u00e0o. \u0110\u1ec3 th\u1ed1ng nh\u1ea5t, b\u1ea1n c\u00f3 th\u1ec3 d\u1ef1a v\u00e0o c\u00e1c vi\u1ebft Function \u0111\u1ec3 chia th\u00e0nh 3 lo\u1ea1i nh\u01b0 sau:<\/p>\n\n\n\n<p><strong>Function Void<\/strong><\/p>\n\n\n\n<p>\u0110\u00e2y l\u00e0 lo\u1ea1i h\u00e0m \u0111\u01a1n gi\u1ea3n, kh\u00f4ng y\u00eau c\u1ea7u\/tr\u1ea3 v\u1ec1 gi\u00e1 tr\u1ecb n\u00e0o c\u1ea3. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng Void \u0111\u1ec3 ho\u00e0n th\u00e0nh t\u1eadp h\u1ee3p c\u00e1c h\u01b0\u1edbng d\u1eabn n\u00e0o \u0111\u00f3. Th\u00f4ng th\u01b0\u1eddng, h\u00e0m s\u1ebd \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean theo ch\u1ee9c n\u0103ng c\u1ee7a n\u00f3. \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng m\u1eb9o c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n qu\u1ea3n l\u00fd h\u00e0m, ki\u1ec3m tra m\u00e3 d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n\n\n\n<p><strong>Function y\u00eau c\u1ea7u gi\u00e1 tr\u1ecb \u0111\u1ea7u v\u00e0o<\/strong><\/p>\n\n\n\n<p>C\u00e1c h\u00e0m Void tuy \u0111\u01a1n gi\u1ea3n nh\u01b0ng s\u1ebd c\u00f3 v\u00e0i h\u1ea1n ch\u1ebf b\u1edfi nh\u1eefng h\u00e0m n\u00e0y ho\u00e0n to\u00e0n kh\u00f4ng thay \u0111\u1ed5i \u0111\u01b0\u1ee3c b\u1ea5t c\u1ee9 \u0111i\u1ec1u g\u00ec. Do \u0111\u00f3, \u0111\u1ec3 c\u00f3 th\u1ec3 t\u0103ng \u0111\u01b0\u1ee3c t\u00ednh h\u1eefu d\u1ee5ng c\u1ee7a Function, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u01b0a nh\u1eefng gi\u00e1 tr\u1ecb c\u1ee5 th\u1ec3 v\u00e0o \u0111\u1ec3 x\u1eed l\u00fd.<\/p>\n\n\n\n<p><strong>Function tr\u1ea3 gi\u00e1 tr\u1ecb \u0111\u1ea7u ra<\/strong><\/p>\n\n\n\n<p>\u0110\u00e2y l\u00e0 lo\u1ea1i Function cu\u1ed1i c\u00f9ng trong danh s\u00e1ch ng\u00e0y h\u00f4m nay. Lo\u1ea1i h\u00e0m n\u00e0y s\u1ebd tr\u1ea3 d\u1eef li\u1ec7u v\u1ec1 sau khi th\u1ef1c hi\u1ec7n ch\u1ea1y xong. H\u00e0m n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch khi b\u1ea1n mu\u1ed1n th\u1ef1c hi\u1ec7n thay \u0111\u1ed5i d\u1eef li\u1ec7u tr\u01b0\u1edbc s\u1eed d\u1ee5ng.<\/p>\n\n\n\n<p>>>>Xem th\u00eam: <a href=\"https:\/\/topviecit.vn\/blog\/unit-test-la-gi-cac-khai-niem-can-biet-khi-su-dung-unit-test\/\">Unit Test L\u00e0 G\u00ec? C\u00e1c Kh\u00e1i Ni\u1ec7m C\u1ea7n Bi\u1ebft Khi S\u1eed D\u1ee5ng Unit Test<\/a><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" src=\"https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-13.jpeg\" alt=\"B\u1ea1n c\u00f3 th\u1ec3 v\u1eadn d\u1ee5ng nhi\u1ec1u c\u00e1ch \u0111\u1ec3 vi\u1ebft Function\" class=\"wp-image-1832\" srcset=\"https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-13.jpeg 800w, https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-13-640x400.jpeg 640w, https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-13-768x480.jpeg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption><em>B\u1ea1n c\u00f3 th\u1ec3 v\u1eadn d\u1ee5ng nhi\u1ec1u c\u00e1ch \u0111\u1ec3 vi\u1ebft Function<\/em><\/figcaption><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Mot_so_van_de_ve_Function_nen_biet\"><\/span><strong>M\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 v\u1ec1 Function n\u00ean bi\u1ebft<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>B\u00ean c\u1ea1nh kh\u00e1i ni\u1ec7m v\u1ec1 Function l\u00e0 g\u00ec c\u0169ng nh\u01b0 c\u00e1c lo\u1ea1i Function \u1edf tr\u00ean, b\u1ea1n c\u0169ng n\u00ean l\u01b0u \u00fd m\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 c\u1ea7n bi\u1ebft sau \u0111\u00e2y:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Luu_y_khi_su_dung_Function\"><\/span><strong>L\u01b0u \u00fd khi s\u1eed d\u1ee5ng Function<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Function l\u00e0 g\u00ec c\u00f3 th\u1ec3 g\u1ecdi c\u00e1c h\u00e0m kh\u00e1c. Th\u1eadm ch\u00ed, 1 Function l\u00e0 g\u00ec c\u0169ng c\u00f3 th\u1ec3 t\u1ef1 g\u1ecdi ch\u00ednh m\u00ecnh v\u00e0 tr\u01b0\u1eddng h\u1ee3p n\u00e0y \u0111\u01b0\u1ee3c c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111\u1ec7 quy. Tuy v\u1eady, b\u1ea1n kh\u00f4ng n\u00ean l\u1ea1m d\u1ee5ng ch\u1ee9c n\u00e0y n\u00e0y b\u1edfi c\u00f3 th\u1ec3 khi\u1ebfn ch\u01b0\u01a1ng tr\u00ecnh c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 ph\u1ee9c t\u1ea1p h\u01a1n. B\u1ea1n c\u0169ng kh\u00f4ng n\u00ean t\u1ea1o qu\u00e1 nhi\u1ec1u h\u00e0m c\u00f3 n\u1ed9i dung r\u1eafc r\u1ed1i ho\u1eb7c ph\u1ee5 thu\u1ed9c qu\u00e1 nhi\u1ec1u v\u00e0o h\u00e0m kh\u00e1c.<\/p>\n\n\n\n<p>M\u1ed7i khi g\u1ecdi m\u1ed9t h\u00e0m, ch\u01b0\u01a1ng tr\u00ecnh c\u1ee7a b\u1ea1n s\u1ebd t\u1ea1m d\u1eebng, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 hi\u1ec3u r\u1eb1ng program \u0111ang \u0111\u01b0\u1ee3c n\u1ea1p v\u00e0o b\u1ed9 nh\u1edb. Do \u0111\u00f3, b\u1ea1n n\u00ean l\u01b0u \u00fd kh\u00f4ng g\u1ecdi th\u00eam h\u00e0m kh\u00e1c trong qu\u00e1 tr\u00ecnh n\u00e0y b\u1edfi s\u1ebd khi\u1ebfn cho b\u1ed9 nh\u1edb b\u1ecb d\u00f9ng nhi\u1ec1u th\u00eam. H\u00e0m s\u1ebd lu\u00f4n \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi m\u1ed9t t\u00ean g\u1ecdi c\u1ee5 th\u1ec3. M\u1ecdi thao t\u00e1c v\u1edbi h\u00e0m s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n qua t\u00ean g\u1ecdi m\u00e0 b\u1ea1n \u0111\u00e3 \u0111\u1eb7t n\u00e0y.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Muc_dich_cua_viec_su_dung_Function\"><\/span><strong>M\u1ee5c \u0111\u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng Function<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Function s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n v\u1edbi nh\u1eefng m\u1ee5c \u0111\u00edch nh\u01b0 sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Khi l\u1eadp tr\u00ecnh vi\u00ean th\u1ef1c hi\u1ec7n m\u1ed9t c\u00f4ng vi\u1ec7c c\u00f3 t\u00ednh ch\u1ea5t gi\u1ed1ng nhau nh\u01b0ng \u1edf nhi\u1ec1u v\u1ecb tr\u00ed kh\u00e1c nhau.<\/li><li>Khi c\u1ea7n chia nh\u1ecf ch\u01b0\u01a1ng tr\u00ecnh qu\u00e1 l\u1edbn, ph\u1ee9c t\u1ea1p th\u00e0nh nh\u1eefng \u0111\u01a1n th\u1ec3 nh\u1ecf h\u01a1n hay ch\u00ednh l\u00e0 c\u00e1c Function. \u0110i\u1ec1u n\u00e0y s\u1ebd gi\u00fap cho ch\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1ee3c g\u1ecdn g\u00e0ng, d\u1ec5 hi\u1ec3u trong qu\u1ea3n l\u00fd, x\u1eed l\u00fd c\u00f4ng vi\u1ec7c.<\/li><\/ul>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" src=\"https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-14.jpeg\" alt=\"Function gi\u00fap ch\u01b0\u01a1ng tr\u00ecnh c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c r\u00f5 r\u00e0ng h\u01a1n\" class=\"wp-image-1833\" srcset=\"https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-14.jpeg 800w, https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-14-640x400.jpeg 640w, https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-14-768x480.jpeg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption><em>Function gi\u00fap ch\u01b0\u01a1ng tr\u00ecnh c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c r\u00f5 r\u00e0ng h\u01a1n<\/em><\/figcaption><\/figure><\/div>\n\n\n\n<p>Tr\u00ean \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 th\u00f4ng tin v\u1ec1 Function. Hy v\u1ecdng v\u1edbi b\u00e0i vi\u1ebft ng\u1eafn g\u1ecdn n\u00e0y, b\u1ea1n s\u1ebd hi\u1ec3u h\u01a1n v\u1ec1 <strong>Function l\u00e0 g\u00ec<\/strong>, nh\u1eefng v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn Function. \u0110\u1eebng qu\u00ean theo d\u00f5i c\u00e1c b\u00e0i vi\u1ebft kh\u00e1c thu\u1ed9c chuy\u00ean m\u1ee5c n\u00e0y \u0111\u1ec3 c\u00f3 th\u1ec3 c\u1eadp nh\u1eadt c\u00e1c tin t\u1ee9c li\u00ean quan \u0111\u1ebfn <strong><a href=\"https:\/\/www.topcv.vn\/viec-lam-it\">vi\u1ec7c l\u00e0m IT<\/a><\/strong>.<\/p>\n\n\n\n<p>>>>Xem th\u00eam: <a href=\"https:\/\/topviecit.vn\/blog\/thuc-tap-it-helpdesk\/\">Th\u1ef1c t\u1eadp IT Helpdesk l\u00e0 g\u00ec? M\u1ee9c thu nh\u1eadp bao nhi\u00eau?<\/a><\/p>\n\n\n\n<p class=\"has-text-align-right\"><em>H\u00ecnh \u1ea3nh: S\u01b0u t\u1ea7m<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Function l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m m\u00e0 b\u1ea1n c\u1ea7n l\u01b0u \u00fd trong l\u0129nh v\u1ef1c c\u00f4ng ngh\u1ec7 th\u00f4ng tin. Tuy v\u1eady, c\u00f3 kh\u00e1 nhi\u1ec1u b\u1ea1n l\u1eadp tr\u00ecnh m\u1edbi ch\u01b0a th\u1ef1c s\u1ef1 hi\u1ec3u v\u1ec1 Function l\u00e0 g\u00ec. H\u00e3y c\u00f9ng topviecit.vn t\u00ecm hi\u1ec3u ngay v\u1ec1 kh\u00e1i ni\u1ec7m Function trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y. T\u00ecm hi\u1ec3u v\u1ec1 Function l\u00e0 g\u00ec? [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":1809,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"cybocfi_hide_featured_image":"","footnotes":""},"categories":[86],"tags":[428,434],"class_list":["post-1801","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chia-se-kinh-nghiem","tag-function-la-gi","tag-function-nghia-la-gi"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Function l\u00e0 g\u00ec? B\u00ed m\u1eadt v\u1ec1 Function m\u00e0 d\u00e2n l\u1eadp tr\u00ecnh c\u1ea7n bi\u1ebft<\/title>\n<meta name=\"description\" content=\"T\u00ecm hi\u1ec3u v\u1ec1 kh\u00e1i ni\u1ec7m c\u1ee7a Function l\u00e0 g\u00ec c\u00f9ng v\u1edbi c\u00e1c lo\u1ea1i Function s\u1ebd gi\u00fap cho b\u1ea1n hi\u1ec3u v\u00e0 v\u1eadn d\u1ee5ng \u0111\u01b0\u1ee3c Function t\u1ed1t h\u01a1n.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/topviecit.vn\/blog\/function-la-gi\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Function l\u00e0 g\u00ec? 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